CVE-2021-47087

In the Linux kernel, the following vulnerability has been resolved: tee: optee: Fix incorrect page free bug Pointer to the allocated pages (struct page *page) has already progressed towards the end of allocation. It is incorrect to perform __free_pages(page, order) using this pointer as we would free any arbitrary pages. Fix this by stop modifying the page pointer.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/18549bf4b21c739a9def39f27dcac53e27286ab5	Patch
https://git.kernel.org/stable/c/806142c805cacd098e61bdc0f72c778a2389fe4a	Patch
https://git.kernel.org/stable/c/91e94e42f6fc49635f1a16d8ae3f79552bcfda29	Patch
https://git.kernel.org/stable/c/ad338d825e3f7b96ee542bf313728af2d19fe9ad	Patch
https://git.kernel.org/stable/c/18549bf4b21c739a9def39f27dcac53e27286ab5	Patch
https://git.kernel.org/stable/c/806142c805cacd098e61bdc0f72c778a2389fe4a	Patch
https://git.kernel.org/stable/c/91e94e42f6fc49635f1a16d8ae3f79552bcfda29	Patch
https://git.kernel.org/stable/c/ad338d825e3f7b96ee542bf313728af2d19fe9ad	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:5.16:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.16:rc2::::::
	cpe:2.3:o:linux:linux_kernel:5.16:rc3::::::
	cpe:2.3:o:linux:linux_kernel:5.16:rc4::::::
	cpe:2.3:o:linux:linux_kernel:5.16:rc5::::::
	cpe:2.3:o:linux:linux_kernel:5.16:rc6::::::

History

No history.

Information

Published : 2024-03-04 18:15

Updated : 2025-01-16 17:19

NVD link : CVE-2021-47087

Mitre link : CVE-2021-47087

CVE.ORG link : CVE-2021-47087

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-763

Release of Invalid Pointer or Reference

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